#include <avr/io.h>
#include <avr/delay.h>

#define F_CPU 10000000UL
void delayms(uint16_t millis) {
  uint16_t loop;
  while ( millis ) {
    _delay_ms(1);
    millis--;
  }
}

int main(void) {
    PORTB = 0xff;
    DDRB = 0xff;
}

